[NaCl SDK] nacl_io: add getnameinfo scaffolding

native_client_sdk/src/libraries/nacl_io/host_resolver.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef __STDC_LIMIT_MACROS
 #define __STDC_LIMIT_MACROS
 #endif
 
 #include "nacl_io/host_resolver.h"
 
@@ skipping 203 matching lines @@
 void HostResolver::freeaddrinfo(struct addrinfo* res) {
   while (res) {
     struct addrinfo* cur = res;
     res = res->ai_next;
     free(cur->ai_addr);
     free(cur->ai_canonname);
     free(cur);
   }
 }
 
+int HostResolver::getnameinfo(const struct sockaddr *sa,
+                              socklen_t salen,
+                              char *host,
+                              size_t hostlen,
+                              char *serv,
+                              size_t servlen,
+                              int flags) {
+  return ENOSYS;
+}
+
 int HostResolver::getaddrinfo(const char* node,
                               const char* service,
                               const struct addrinfo* hints_in,
                               struct addrinfo** result) {
   *result = NULL;
   struct addrinfo* end = NULL;
 
   if (node == NULL && service == NULL) {
     LOG_TRACE("node and service are NULL.");
     return EAI_NONAME;
@@ skipping 207 matching lines @@
   hostent_.h_addr_list = NULL;
 #if !defined(h_addr)
   // Initialize h_addr separately in the case where it is not a macro.
   hostent_.h_addr = NULL;
 #endif
 }
 
 }  // namespace nacl_io
 
 #endif  // PROVIDES_SOCKET_API